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[sdw] Proposal: direct link from Observation to ultimate feature of interest

From: Simon Cox via GitHub <sysbot+gh@w3.org>
Date: Tue, 06 Feb 2018 00:22:21 +0000
To: public-sdwig@w3.org
Message-ID: <issues.opened-294589542-1517876539-sysbot+gh@w3.org>
dr-shorthair has just created a new issue for https://github.com/w3c/sdw:

== Proposal: direct link from Observation to ultimate feature of interest ==
When revising SSN last year, a few requirements identified in om-lite never made it onto the agenda. One of these was the need to have links to both a sample and to the 'ultimate' feature of interest of an observation. 

There is currently just one property - sosa:hasFeatureOfInterest - whose definition matches that from OGC O&M: it links to the _proximate_ feature whose property is being observed. However, in the case where a sample is involved, this requires traversal of a property-chain to find what the ultimate feature-of-interest is ( sosa:hasFeatureOfInterest , sosa:isSampleOf ) . This adds complexity to some common data-discovery scenarios. 

om-lite proposed to resolve this by have a separate property for the sample - oml:samplingStrategy. On reflection, this was unnecessarily obscure, and also undermined the integrity of the featureOfInterest property which O&M defined as the proximate foi (not the ultimate foi). So now I propose to meet the requirement with an explicit property hasUltimateFeatureOfInterest which corresponds to the property-chain mentioned above. I have implemented this in the branch https://github.com/w3c/sdw/tree/simon-observation-ultimateFOI - currently only the RDF, but will also make a proposal for modified text, else as an add-on if that is a better strategy. 

Please view or discuss this issue at https://github.com/w3c/sdw/issues/1004 using your GitHub account
Received on Tuesday, 6 February 2018 00:22:35 UTC

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